Nut-lock.



J.-D. COX.

NUT LOCK.

APPLICATION FILED, AUG.18, 1915.

Patented Apr. 25, 1916. v

Juvenile;

JOHN DAWSONjC'OX, 0F PORTER, WASHINGTON.

NUT-LOCK.

macaw.

Specification of Letters Patent.

Patented Apr. 25, 19. h.

7 Application filed August 18, 1915. SerialNo. 46,158.

To all whom it may concern:

Be it known that 1, JOHN Dawson Cox,

a citizen of the United States, residing at Porter, in the county ofGrays Harbor and State of Vashington, have invented certain new anduseful Improvements in Nut-Locks, of which the following is aspecification.

The present invention relates to a new and improved nut lock; and themain object thereof is to provide a device of this character which isunusually simple in construction and which, it is believed may bemanufactured at a minimum cost.

The invention contemplates the provision of a nut lock wherein asubstantially wedge shaped key is arranged in a vertically slotted bolt,the key carrying suitable radial projections which are engaged by thenut so that when the latter is moved into a secure position, the keywill be correspondingly actuated thus causing the bolt to expand andretain the nut against retrograde movement? 4 Various other objects andadvantages will become apparent during the continuance of the followingdescription.

The above and other objectssvhich will become apparent, are accomplishedby such means as are shown-in their preferred form in the accompan yin'gdrawings, described in the following speeification and then morespecifically poiiiteldgblitin the appended claims.

' ying drawings wherein like characters designate like parts throughoutthe several views, Figure 1 is a side elevation of my invention showingparts in section. Fig. 2 is a longitudinal sectional view of the deviceshowing parts in elevation.

In the drawings the numeral 10 designates I the shank of the bolt memberwhich carries and operate in an annular out out portion 1'? a headportion 11 at one end and is'screw threaded a portion of its lengthadjacent the other end asat 12. The screw threaded portion 12 is slottedas at 13, theslot 13 terminating in a somewhat restricted transverse cutout 142. The purpose of the out out 14 is to add greater resiliency tothe projecting ends of the screw threaded portion. A wedge shaped key 15is slidably arranged in the slot 13, the said keycarrying a pair ofoutstanding pro ections 16. Ihe projections 16 extend beyond'the.periphery of the screw threaded portionof the bolt in the nut 18. Thefunction performed by the key 15 is thought to be readily obvious;

As the nut 18 is rotated on the screw. threaded portion of the bolt in'a proper direction it will of course force the key along the slot 13.As the key is forced in the slot 13, the projecting ends of the screwthreaded portion 12 will be uniformly spread so as to positively andeffectually bind the nut in place. In actual practice it has been foundthat the removal of the nut is positively prevented by the lockingaction that is attained.

The usual washer 1-9 is shown in the drawings in order to more properlyset forth the construction of my device.

From the foregoing it will be noted that this invention is exceedinglysimplelin construction and that the parts may beformed from stockmaterial. In view of this. cons'truc tion' the cheap cost of manufacturewill be readily recognized.

In reducing my mvention to practice I find that the form referred toherein as the most practical and preferred embodiment is the mostefficienh'but realizing that certain conditions will necessarily vary inconcurrence withithe adoption of my device, I desire to emphasize thefact that various minor changes inthe details of construction and outerface of said nut, lateral projections on said wedge key. and said nutsprovided with a recess to receive said lateral projections, as and forthe purpose specified.

2. In a nut lock. a bolt member. said bolt member being slotted aportion of its length, said bolt provided with a second slot of lesswidth than said first mentioned slot to communicate' with said firstmentioned slot, a

nut member to be movably mounted on said bolt member, a wedge key to beslidable in said first mentioned slot, lateral pro ections on said wedge'member, said nut member iio provided with a recess to receive saidlateralprojections, whereby said key may be moved positix'elyt in onedirection in consistence with movement of the nut member, and sald edgekey terminating flush with the inner and outer 'fa'ces ofthenutmemberwhereby it will be protected at all times, as and for the purposespecified.

In testimony whereof I affix my signature in presence of two witnesses.

J OHN DAWSON COX. Titnesses A. EoFI'IZGERALD, M. J. MURPHY.

